Many drugs affect thyroid hormone pharmacokinetics and metabolism (e.g., absorption, synthesis, secretion, catabolism, protein binding, and target tissue response) and may alter the therapeutic response to Levothroid. A listing of drug-thyroidal axis interactions is contained in Table 2. In addition, thyroid hormones and thyroid status have varied effects on the pharmacokinetics and actions of other drugs.

TSH, in turn, is the physiologic stimulus for the synthesis and secretion of thyroid hormones, L-thyroxine (T 4 ) and L-triiodothyronine (T 3 ), by the thyroid gland.

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Therefore, it is recommended that patients receiving levothyroxine sodium be given the minimum dose necessary to achieve the desired clinical and biochemical response. The increased bone resorption may be associated with increased serum levels and urinary excretion of calcium and phosphorous, elevations in bone alkaline phosphatase and suppressed serum parathyroid hormone levels.

Levothroid Oral Uses, Side Effects, Interactions, Pictures, Warnings

Levothyroxine is used to treat an underactive thyroid (hypothyroidism). It replaces or provides more thyroid hormone, which is normally produced by the thyroid gland. Low thyroid hormone levels can occur naturally or when the thyroid gland is injured by radiation/medications or removed by surgery.

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Laboratory and/or medical tests (such as thyroid function tests) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.

However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching /swelling (especially of the face/ tongue /throat), severe dizziness, trouble breathing.

Common Side Effects of Levothroid (Levothyroxine Sodium) Drug

Levothroid (levothyroxine sodium) is a replacement for a hormone that is normally produced by your thyroid gland to regulate the body's energy and metabolism used to treat hypothyroidism (low thyroid hormone).

Seizures have been reported rarely with the institution of levothyroxine therapy.

l any doctor or dentist who treats you that you are using levothyroxine.

Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose. Take the missed dose as soon as you remember.

Levothyroxine should not be used to treat obesity or weight problems. Dangerous side effects or death can occur from the misuse of levothyroxine, especially if you are taking any other weight-loss medications or appetite suppressants.

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